ArticleslgStudy

biology

Haloplasma

Haloplasma is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Haloplasma rather than just read about it. In short: Haloplasma contractile is a halophilic, cell wall-less bacterium. It is the only known representative of a deep lineage, and is classified in its own family (Haloplasmataceae) and order (Haloplasmatales), in the class Mollicutes.

Key takeaways

  • Haloplasma belongs to biology; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Haloplasma to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Haloplasma from memory before moving on to harder problems.

Reference excerpt

Haloplasma contractile is a halophilic, cell wall-less bacterium. It is the only known representative of a deep lineage, and is classified in its own family (Haloplasmataceae) and order (Haloplasmatales), in the class Mollicutes. In terms of genetics, the bacterium Haloplasma contractile contains a dcw gene cluster is responsible for containing all the genes of the organism and promoting peptidoglycan synthesis. Also, MreB/Mbl are specific homologous parts of this bacterium that are vital in the contractility of the cell. Regarding its physical attributes, this organism consists of a spherical body with approximately two protrusions which alternate between straight and contracted forms.

References

3. Antunes, A., et al. “A New Lineage of Halophilic, Wall-Less, Contractile Bacteria from a Brine-Filled Deep of the Red Sea.” Journal of Bacteriology, vol. 190, no. 10, July 2008, pp. 3580–3587., doi:10.1128/jb.01860-07. 4. Antunes, A., et al. “Genome Sequence of Haloplasma Contractile, an Unusual Contractile Bacterium from a Deep-Sea Anoxic Brine Lake.” Journal of Bacteriology, vol. 193, no. 17, 2011, pp. 4551–4552., doi:10.1128/jb.05461-11.

External links Type strain of Haloplasma contractile at BacDive - the Bacterial Diversity Metadatabase

Worked examples

Example 1 — a first encounter with Haloplasma

Start with the simplest possible case. Write down what Haloplasma claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Haloplasma before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Haloplasma ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Haloplasma

In research
Haloplasma appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Haloplasma in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Haloplasma is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bacteria stubs, Mollicutes, Monotypic bacteria genera, so understanding it makes those chapters shorter.
In everyday life
Look for Haloplasma outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Haloplasma in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Haloplasma means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Haloplasma out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Haloplasma in simple terms?

Haloplasma contractile is a halophilic, cell wall-less bacterium. It is the only known representative of a deep lineage, and is classified in its own family (Haloplasmataceae) and order (Haloplasmatales), in the class Mollicutes.

Why does Haloplasma matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Haloplasma?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Haloplasma.

Tags

  • Bacteria stubs
  • Mollicutes
  • Monotypic bacteria genera

Keep exploring